[s-cars] Oil Pressure and Temperature Sender and Check and Relief Valve Info

[David Forgie]

There is an oil pressure relief valve in the oil pump at the front of the engine, behind the single pin oil temperature sender. 

There is an oil pressure check valve in the block, behind the UrS4 pressure sender or the UrS6 pressure switch (or adapter plug) 

Some reading: 

Oil Pump, Temperature Sender, Pressure Relief Valve Info:. 
http://forums.quattroworld.com/s4s6/msgs/93029.phtml 

AAN Oil Pressure Sender, Switches, Wiring and Check Valves: 
http://forums.quattroworld.com/s4s6/msgs/96161.phtml 

Dave F.